I am getting confused because different people keep referring to these two parts as interchangeable and keep giving me different recommendations. I just had the drive belt replaced due to a loud squeaking noise and lots of dry rot, this is the belt that is attached to the engine and drives the alternator, pumps, etc. Then I hear mention of a "timing belt" that is connected to the camshaft and drives the pistons. What's the correct terminology? How do I inspect the timing belt for myself? What are indications that it needs to be replaced? The car has 123,000 miles and is running great besides the need for a new catalytic converter.
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2002 Toyota Corolla Question: Difference between "timing belt" and "drive belt"?
Answer #1mastertech6371 November 16, 2010, 18:21Master
timing belt connects the camshaft to the crankshaft to control engine timing. the drive belts are used for turning the alt, ac and power steering. the timing belt is internal in the motor and the drive belts are external.
jay d January 21, 2011, 11:47Enthusiast
Your car has a "Metal Timing Chain" made quite like the same as a biycle chain only much much tougher..... the "Timing Belt" is just that on certain other engines they have RUBBER BELTS that must be replaced every 60-80K miles....the chains generally last for a hell of a long time, they make clanking slapping noises when they are wearing(getting loose and sloppy)Yours is not.... I would not worry....I have one with over 100K miles and they sometimes last another 100K. when and if it needs replacement have the water pump, thermostat and anti freeze changed as well.... as most of the labor to R&R these parts is already factored in on the chain repair, also replace all the other belts if they are old at the same time.Hope this helps.....good luck!!